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238 lines
9.1 KiB
C
238 lines
9.1 KiB
C
/** @file
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EDKII Universal Flash Storage Host Controller Protocol.
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Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __EDKII_UFS_HC_PROTOCOL_H__
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#define __EDKII_UFS_HC_PROTOCOL_H__
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//
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// UFS Host Controller Protocol GUID value
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//
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#define EDKII_UFS_HOST_CONTROLLER_PROTOCOL_GUID \
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{ \
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0xebc01af5, 0x7a9, 0x489e, { 0xb7, 0xce, 0xdc, 0x8, 0x9e, 0x45, 0x9b, 0x2f } \
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}
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//
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// Forward reference for pure ANSI compatability
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//
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typedef struct _EDKII_UFS_HOST_CONTROLLER_PROTOCOL EDKII_UFS_HOST_CONTROLLER_PROTOCOL;
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/**
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Get the MMIO base address of UFS host controller.
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@param This The protocol instance pointer.
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@param MmioBar Pointer to the UFS host controller MMIO base address.
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@retval EFI_SUCCESS The operation succeeds.
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@retval EFI_INVALID_PARAMETER The parameters are invalid.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EDKII_UFS_HC_GET_MMIO_BAR)(
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IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL *This,
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OUT UINTN *MmioBar
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);
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///
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/// *******************************************************
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/// EFI_UFS_HOST_CONTROLLER_OPERATION
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/// *******************************************************
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///
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typedef enum {
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///
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/// A read operation from system memory by a bus master.
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///
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EdkiiUfsHcOperationBusMasterRead,
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///
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/// A write operation from system memory by a bus master.
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///
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EdkiiUfsHcOperationBusMasterWrite,
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///
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/// Provides both read and write access to system memory by both the processor and a
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/// bus master. The buffer is coherent from both the processor's and the bus master's point of view.
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///
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EdkiiUfsHcOperationBusMasterCommonBuffer,
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EdkiiUfsHcOperationMaximum
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} EDKII_UFS_HOST_CONTROLLER_OPERATION;
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/**
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Provides the UFS controller-specific addresses needed to access system memory.
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@param This A pointer to the EFI_UFS_HOST_CONTROLLER_PROTOCOL instance.
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@param Operation Indicates if the bus master is going to read or write to system memory.
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@param HostAddress The system memory address to map to the UFS controller.
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@param NumberOfBytes On input the number of bytes to map. On output the number of bytes
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that were mapped.
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@param DeviceAddress The resulting map address for the bus master UFS controller to use to
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access the hosts HostAddress.
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@param Mapping A resulting value to pass to Unmap().
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@retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.
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@retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common buffer.
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@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
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@retval EFI_DEVICE_ERROR The system hardware could not map the requested address.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EDKII_UFS_HC_MAP)(
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IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL *This,
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IN EDKII_UFS_HOST_CONTROLLER_OPERATION Operation,
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IN VOID *HostAddress,
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IN OUT UINTN *NumberOfBytes,
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OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,
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OUT VOID **Mapping
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);
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/**
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Completes the Map() operation and releases any corresponding resources.
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@param This A pointer to the EFI_UFS_HOST_CONTROLLER_PROTOCOL instance.
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@param Mapping The mapping value returned from Map().
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@retval EFI_SUCCESS The range was unmapped.
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@retval EFI_DEVICE_ERROR The data was not committed to the target system memory.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EDKII_UFS_HC_UNMAP)(
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IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL *This,
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IN VOID *Mapping
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);
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/**
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Allocates pages that are suitable for an EfiUfsHcOperationBusMasterCommonBuffer
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mapping.
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@param This A pointer to the EFI_UFS_HOST_CONTROLLER_PROTOCOL instance.
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@param Type This parameter is not used and must be ignored.
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@param MemoryType The type of memory to allocate, EfiBootServicesData or
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EfiRuntimeServicesData.
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@param Pages The number of pages to allocate.
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@param HostAddress A pointer to store the base system memory address of the
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allocated range.
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@param Attributes The requested bit mask of attributes for the allocated range.
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@retval EFI_SUCCESS The requested memory pages were allocated.
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@retval EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are
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MEMORY_WRITE_COMBINE and MEMORY_CACHED.
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@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
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@retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EDKII_UFS_HC_ALLOCATE_BUFFER)(
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IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL *This,
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IN EFI_ALLOCATE_TYPE Type,
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IN EFI_MEMORY_TYPE MemoryType,
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IN UINTN Pages,
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OUT VOID **HostAddress,
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IN UINT64 Attributes
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);
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/**
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Frees memory that was allocated with AllocateBuffer().
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@param This A pointer to the EFI_UFS_HOST_CONTROLLER_PROTOCOL instance.
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@param Pages The number of pages to free.
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@param HostAddress The base system memory address of the allocated range.
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@retval EFI_SUCCESS The requested memory pages were freed.
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@retval EFI_INVALID_PARAMETER The memory range specified by HostAddress and Pages
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was not allocated with AllocateBuffer().
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EDKII_UFS_HC_FREE_BUFFER)(
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IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL *This,
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IN UINTN Pages,
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IN VOID *HostAddress
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);
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/**
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Flushes all posted write transactions from the UFS bus to attached UFS device.
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@param This A pointer to the EFI_UFS_HOST_CONTROLLER_PROTOCOL instance.
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@retval EFI_SUCCESS The posted write transactions were flushed from the UFS bus
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to attached UFS device.
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@retval EFI_DEVICE_ERROR The posted write transactions were not flushed from the UFS
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bus to attached UFS device due to a hardware error.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EDKII_UFS_HC_FLUSH)(
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IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL *This
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);
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typedef enum {
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EfiUfsHcWidthUint8 = 0,
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EfiUfsHcWidthUint16,
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EfiUfsHcWidthUint32,
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EfiUfsHcWidthUint64,
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EfiUfsHcWidthMaximum
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} EDKII_UFS_HOST_CONTROLLER_PROTOCOL_WIDTH;
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/**
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Enable a UFS bus driver to access UFS MMIO registers in the UFS Host Controller memory space.
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@param This A pointer to the EDKII_UFS_HOST_CONTROLLER_PROTOCOL instance.
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@param Width Signifies the width of the memory operations.
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@param Offset The offset within the UFS Host Controller MMIO space to start the
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memory operation.
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@param Count The number of memory operations to perform.
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@param Buffer For read operations, the destination buffer to store the results.
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For write operations, the source buffer to write data from.
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@retval EFI_SUCCESS The data was read from or written to the UFS host controller.
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@retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
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valid for the UFS Host Controller memory space.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
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@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EDKII_UFS_HC_MMIO_READ_WRITE)(
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IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL *This,
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IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL_WIDTH Width,
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IN UINT64 Offset,
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IN UINTN Count,
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IN OUT VOID *Buffer
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);
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///
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/// UFS Host Controller Protocol structure.
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///
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struct _EDKII_UFS_HOST_CONTROLLER_PROTOCOL {
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EDKII_UFS_HC_GET_MMIO_BAR GetUfsHcMmioBar;
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EDKII_UFS_HC_ALLOCATE_BUFFER AllocateBuffer;
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EDKII_UFS_HC_FREE_BUFFER FreeBuffer;
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EDKII_UFS_HC_MAP Map;
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EDKII_UFS_HC_UNMAP Unmap;
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EDKII_UFS_HC_FLUSH Flush;
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EDKII_UFS_HC_MMIO_READ_WRITE Read;
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EDKII_UFS_HC_MMIO_READ_WRITE Write;
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};
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///
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/// UFS Host Controller Protocol GUID variable.
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///
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extern EFI_GUID gEdkiiUfsHostControllerProtocolGuid;
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#endif
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